SOLUTION: how many permutations of size 3 can one produce with the letters p, r, m and n? list them.

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Question 1027607: how many permutations of size 3 can one produce with the letters p, r, m and n? list them.
Answer by ikleyn(52778) About Me  (Show Source):
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how many permutations of size 3 can one produce with the letters p, r, m and n? list them.
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Answer. C%5B4%5D%5E3+%2A+P%283%29 = %284%2A3%2A2%29%2F%281%2A2%2A3%29 . 1%2A2%2A3 = 4*3*2 = 24.


Solution. There are C%5B4%5D%5E3 combinations of 4 things taken 3 at a time, and each of this combinations can be arranged (ordered) by 3! ways.

It gives the answer.